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Android Places autocomplete返回空点异常_Android - Fatal编程技术网

Android Places autocomplete返回空点异常

Android Places autocomplete返回空点异常,android,Android,我正在尝试在我的代码中添加位置自动完成,这是在MainActivity中: @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_searchplace: // Initialize the AutocompleteSupportFragment. Places.init

我正在尝试在我的代码中添加位置自动完成,这是在MainActivity中:

@Override
  public boolean onOptionsItemSelected(MenuItem item) {

    switch (item.getItemId()) {
         case R.id.action_searchplace:
        // Initialize the AutocompleteSupportFragment.
        Places.initialize(getApplicationContext(), getString(R.string.google_maps_key));
        PlacesClient placesClient = Places.createClient(this);

        AutocompleteSupportFragment autocompleteFragment = (AutocompleteSupportFragment)
            getSupportFragmentManager().findFragmentById(R.id.autocomplete_fragment);

        // Specify the types of place data to return.
        autocompleteFragment.setPlaceFields(Arrays.asList(Place.Field.ID, Place.Field.NAME));

        // Set up a PlaceSelectionListener to handle the response.
        autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
          @Override
          public void onPlaceSelected(Place place) {
            // TODO: Get info about the selected place.
            Log.i("Place", "Place: " + place.getName() + ", " + place.getId());
          }

          @Override
          public void onError(Status status) {
            // TODO: Handle the error.
            Log.i("Place", "An error occurred: " + status);
          }
        });
        Toast.makeText(getApplicationContext(), "Working", Toast.LENGTH_LONG).show();
        return true;
这是我的xml片段_searchplace.xml文件:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
  <com.google.android.material.card.MaterialCardView
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
    <androidx.fragment.app.FragmentContainerView android:id="@+id/autocomplete_fragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:name="com.google.android.libraries.places.widget.AutocompleteSupportFragment"
        />
  </com.google.android.material.card.MaterialCardView>
</LinearLayout>
我做错了什么

xml在@santalu的回答后更新

我已将xml文件更新为:

# The activity_main.xml
<androidx.drawerlayout.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.navTheme"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" >
    </com.google.android.material.navigation.NavigationView>

</androidx.drawerlayout.widget.DrawerLayout>


#the app_bar_main.xml
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
  ....
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <com.google.android.material.card.MaterialCardView
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
      <androidx.fragment.app.FragmentContainerView android:id="@+id/autocomplete_fragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:name="com.google.android.libraries.places.widget.AutocompleteSupportFragment"
        />
    </com.google.android.material.card.MaterialCardView>

没有更多的崩溃,但搜索也不会进行。它仅显示祝酒词。

您没有共享活动的xml。但很明显,您的活动没有任何id为R.id.autocomplete\u fragment的片段

解决方案:以下xml应该属于您的活动,而不是片段

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
  <com.google.android.material.card.MaterialCardView
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
    <androidx.fragment.app.FragmentContainerView android:id="@+id/autocomplete_fragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:name="com.google.android.libraries.places.widget.AutocompleteSupportFragment"
        />
  </com.google.android.material.card.MaterialCardView>
</LinearLayout>

您的autocompleteFragment显然为空,这就是错误所在。我不明白为什么,以及如何纠正它。这正是开发者指南中给出的代码。在您的布局中,您是否检查过命名不一致?这个片段名为autocomplete_fragment吗?另外,文档中说:如果您使用的是autocomplete片段,并且需要重写onActivityResult,那么必须调用super.onActivityResult,否则该片段将无法正常工作。你的碎片里有吗?谢谢。这就阻止了它崩溃,但是点击时搜索图标没有出现。你应该检查一下这个
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
  <com.google.android.material.card.MaterialCardView
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
    <androidx.fragment.app.FragmentContainerView android:id="@+id/autocomplete_fragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:name="com.google.android.libraries.places.widget.AutocompleteSupportFragment"
        />
  </com.google.android.material.card.MaterialCardView>
</LinearLayout>